Lettering-pen.



E. S. KEENE.

LETTERING PEN.

APPLICATION man on. 30. I914.

Patented Oct. 26, 1915.

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EDWARD S. KEENE, OF AGRICULTURAL COLLEGE, NORTH DAKOTA.

LETTERING-PEN.

Specification of Letters Patent.

Patented Uct. 26, 1915.

Application filed October 30, 1914. Serial No. 869,436.

T 0 all whom it may concern: v

Be it known that I, EDWARD S. KEENE, a citizen of the United States, residing at Agricultural College, county of Cass, and State of North Dakota, have invented certain new and useful Improvements in Lettering-Pens, of which the following is a specification.

This invention relates to lettering pens.

The object of the present invention is the provision of a simple and easily adjusted lettering pen of improved construction, adapted for lettering drawings, posters, various forms of notices, and other work requiring heavy lines which cannot be produced with a single stroke of an ordinary pen.

My invention contemplates the provision of improved and novel means for regulating at will the flow of ink to the nib, whereby the supply may be changed as desired while the pen is in use improved means whereby different nibs may be attached to the pen according to the work desired; and finally, a nib or point of improved construction.

In my invention a valve is provided which can be set to entirely out off or to aiford any desired normal supply or flow of ink from the reservoir to the nib or point, together with means whereby the valve may be instantly changed while the pen is in use to afford any desired regulation of the flow of ink to suit any desired condition of lettering being carried on so that lines of any density desired may be obtained.

In my invention the points or nibs having an angularly arranged point are detachable and interchangeable and are adapted to be turned to dispose the point in any desired position in relation to the pen holder. With this construction, I can use any one of a large number of different nibs on thesame pen holder and any given nib which is employed may be turned and secured in any desired relation to the pen holder without disturbing the valve, which is so formed and related to the valve seat in the nib as to permit turning of the nib to any position and the control of the flow by the valve at all times. Means are provided constituting a finger-rest for the pen holder when in use, whereby the slightest movement of the fingers while grasping the pen during use will result in changing the flow of ink to the nib according to the desire of the user.

One form of the invention is set forth hereinafter, but is to be considered as illustrative, rather than restrictive, of the scope of the invention, which is susceptible of modification.

In the accompanying drawings: Figure 1 1s a perspective; Fig. 2, a longitudinal sectlon; Fig. 3, a detail of the nib, dotted lines showing how it may be adjusted; and Fig. 4:, a detail of the cam.

The pen holder 1 may be of any desired shape and length. Secured to the pen holder is a tubular reservoir 2 which is preferably open at 3 for purposes of filling. The tube 2 is provided with an annular flange 4: which is loosely embraced by a rotatable, milled coupling 5 which is inter nally screw-threaded at 6. The nib 7 is provided with a milled exterior and has screwthreads 8 to engage the screw-threads 6 and to abut the end of the tube 2. On loosening the coupling 5, the nib 7 can be turned so as to bring the angularly disposed lettering point 9 around to any desired position in relation to the other parts of the pen which will be described presently so that the pen may be held in any desired position in the hand in carrying on the work of lettering. The point 9 is split, as at 10, and said point is curved or angularly disposed in relation to the nib itself. The detachable joint provided by the coupling 5 and the screwthreads 6 and 8, enables any desired nib to be used and, as various forms and various calibers may be used, the pen is adapted for carrying on all kinds of lettering or shading operations.

Slidable within the tube 2 is a rod 11 which is PIOXldGd with a frusto-conical valve 12 adapted to fit in a corresponding concavity 13 in the nib 7 by which the flow of ink from the reservoir into the nib may be regulated. When the valve is set very close within the concavity 18, the flow of ink is limited, and when withdrawn, it becomes greater. Secured to the rod is a disklike guide 14 which slides in the tube 2 and a plunger 15 which also slides therein. A coil spring 16 interposed between the end of the body 1 and the plunger 15, tends to press the valve 12 snugly into the concavity 13. This spring 16 opposes rearward adjustment of the rod 11 and takes up all lost motion. The plunger 15 serves as a guide in connection with the guide 14: to accurately center the valve 12 in the concavity 13. Slidably mounted on the tube 2 is a sleeve 17 which is.

prevented from turning by a set screw 18 whose shank fastens the tube 2 t dtlie 1 and whose headliesin the slot 19 in the sleeve 17, thus permitting rearward movement of the sleeve. Movement of the sleeve toward the nib end of the pen is limited by;

a shoulder 20 onthe tube 2 which arrests said sleeve. Secured to the sleeve is a leafspring 21 which has a re-bent free end 22 in which is j ournaled, or through which may be screw-threaded the stem 23 which carries at its lower end a cam 24L adapted'to engage the plunger 15. finger-piece or button 25 which may be either flat or dished, On turning the finger-piece 25, the cam will be rotated to press back the plunger 15 and withdraw the valve 12 from the cavity 13. By this means the normal position of thevalve 12 may be readily arranged so that the supply of ink will be entirely cut off from the nib, or, a given minimum supply will be provided for when the pen is inuse. The flexibility of the spring 21 and the arrangement of the camand finger piece 25 permits the cam' and finger-piece to be depressed and' to draw back the plunger 15 and with it the valve1 2,

against the action of spring. 16 when the pen is in use so that by merely manipulating the fingers, the drat'tsman may instantlyslide back the sleeve 17 and the valve and 1. In a lettering pen, the combination with a reservoir pen holder, of a nib rotatably connected thereto which has an angiularly disposed point, and a valve-seat, and a valve carried by the pen-holder cooperating with the s at to regulate the feed regardless of the position of said point.

Secured to the stem 23-is'a' 2. Ina lettering pen, the combination with a reservoirpenrholder, of a nib rotatably connected thereto which has an angularly disposed point, and a concaved valve-seat, anu'aconicai valve carried by the pen-holder fitting said seat to regulate the feed regardless of the position of said point.

3. In-a lettering pen, the combination with a reservoir pen-holder, of a detachable nib having an angularly disposed point and a valve-seat, means on the pen-holder for securing the nib to the pen-holder with its point in any desired position in relation thereto, and'a valve on the pen-holder cooperating with the valveseat to regulate the feed regardless of the position of said point.

4. In a lettering pen, the combination with a reservoir pen-holder, of a nib rotatably connected thereto which has an angularly disposed point and a valve-seat, a springactuated -bodily movable valve cooperating with said seat to regulate the feed regardless of; the position of said point, and means disposed'on the pen-holder in position to be operated by the fingers of the user when writing or lettering for controlling said valve. i

5. In a lettering pen, the combination with a reservoirpen-holder, of a nib rotatably connected thereto which has an angularly disposed point and a valveseat, a springactuated' bodily movable valve cooperating with saidseat toregulate the feed'regardlcss of the position of-said point, and means (lisposed on the pen-holder in position to be operated by the-fingers of the user when writing or lettering adapted for controlling said valve, saidmeans-embodying an adjustingdevice for-initially regulating the position of the valve In testimony whereof, I hereunto afiix my signature inp'resence of two witnesses.

EDIVARD S. KEENE.

IVitnesses: Y 1

ANNA J. Hanonysmn, ETHYLE CLAIRIOE PETERSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

